Sympathies, man.
I've built myself back up to about four hours a night now, from practically none. No particular method, at all. I generally have a couple of "up all nights" every month though.
I had some weird times at the worst of it, when I'd be absolutely knackered but just couldn't sleep a full night. I used to just peg out randomly every once in a while, that sort of "two-hour-blink" thing.
I remember sitting on my sofa one evening, watching hurling on the Irish Language channel. I dropped off for about three hours. When I regained consciousness, the TV was still on, but it was showing South Park. The five or ten minutes it took me to work out that A: It was in Irish, B: I could understand it perfectly, and C; I hadn't had some kind of Brain Haemorrhage were amongst the most panicked moments of my life.